﻿ #define _CRT_SECURE_NO_WARNINGS 1

class Solution {
public:
	char ﬁndTheDiﬀerence(string s, string t)
	{
		char ans = 0;
		int i = 0, j = 0;
		while (i < s.size() || j < t.size())
		{
			ans ^= (s[i++] ^ t[j++]);
		}
		return ans;
	}
};